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采用HKG(HCl-KOH-Giemsa)法对内葵杂3号三交种染色体进行了C-分带研究和分析。结果表明:每条染色体至少都有一条C-分带,染色体组共有62条C-分带,以中间带和着丝点带为主,中间带主要分布在染色体短臂上;C-分带强弱差异明显,其中46条强带,16条弱带。Giemsa C-分带带型公式为:2n=2x=34=8I++3T++5I+I+T++4C+2CI+4CI++3CI++I+T++CT++2CT+。每条染色体都显示出显著的带纹特征,因此,利用Giemsa C-分带方法可以将向日葵的每条染色体区分开。
Using the HKG (HCl-KOH-Giemsa) method, we studied and analyzed the C-banding of three crossbred cultivars in Neikouza No.3. The results showed that there were at least one C-band in each chromosome, with 62 C-bands in the chromosome group, mainly in the middle zone and the centromere zone, and the middle zone mainly on the short arm of the chromosome. The C- Strong and weak differences are obvious, of which 46 strong band, 16 weak band. The Giemsa C-banding formula is: 2n = 2x = 34 = 8I ++ 3T ++ 5I + I + T ++ 4C + 2CI + 4CI ++ 3CI ++ I + T ++ CT ++ 2CT +. Each chromosome shows significant banding, so each chromosome of the sunflower can be distinguished using the Giemsa C-banding method.